High frequency test balun with a capacitor across the output

Details High frequency test balun with a capacitor across the output High frequency test balun with a capacitor across the output

1998-11-16

2000-08-08

Bettendorf, Justin P.

Wave transmission lines and networks

Coupling networks

Balanced to unbalanced circuits

333 32, H03H 742

Patent

active

061007722

ABSTRACT:
A passive, highly efficient, low noise adapter device includes a balun and noise reduction circuitry uniquely configured to converting an unbalanced signal line on a 50 ohm signal line to a balanced signal on a 100 ohm transmission line or vice versa. The device facilitates the use of commercially available and accepted test equipment for accurate transmission measurements on balanced twisted pairs of cables and connectors. A typical utilizational includes an adapter device connected between the 100 ohm twisted pair cable and suitable test equipment such as a network analyzer and/or a signal generator for determining losses in the telephone wire and connectors.

REFERENCES:
patent: 5420551 (1995-05-01), Conte et al.
patent: 5495212 (1996-02-01), DeCramer

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